HARDWARE- Hardware
Lee taught us basic Arduino today, a kind of refresher course. He shows his past projects to us, one project working with sound and light sensors to detect bats and their natural habits. This seems like a really interesting idea as ‘the bat’ is a hard creature to study close up, so using technology to detect real time situations is a unique idea.
Our idea is to create an alcohol detector, making the process of there being a sensor for the alcohol and then it lighting up a bulb if there is too much alcohol on the users breath. If there is alcohol detected on the users breath, then the battery port will turn on, turning on the light bulb. more making it flash.
Iain has even found out a way of shocking someone reversing a transformer, not sure how practical this way in the shape of psychical pain but we’ll see.
Equipment we will use...
The MQ-3 is an alcohol gas sensor that is available for about £5 from Sparkfun, Seeed Studio, and others. It’s easy to use and has sparked the imagination of anyone who has dreamed of building their own breathalyzer device for measuring the amount of alcohol in the human body.
http://arduino.cc/blog/2010/09/23/arduino-breathalyzer-calibrating-the-mq-3-alcohol-sensor/
Alcohol Gas Sensor MQ-3
This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.
Features:
- 5V DC or AC circuit
- Requires heater voltage
- Operation Temperature: -10 to 70 degrees C
- Heater consumption: less than 750mW
- 16.8mm diameter
- 9.3 mm height without the pins
Youtube examples.
This is a kickstarter project looking for funding.
http://www.kickstarter.com/projects/1342192419/pulse-sensor-an-open-source-heart-rate-sensor-that
Arduino – Using a Sharp IR Sensor for Distance Calculation
http://luckylarry.co.uk/arduino-projects/arduino-using-a-sharp-ir-sensor-for-distance-calculation/
Using a Sharp GP2Y0A02 series infrared distance sensor it’ll detect and measure anything within a 20-150cm range and it does this by triangulation from where it emits a beam of IR and from when it receives it.
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